Eroare de compilare: main.cpp:4:1: error: 'ifstream' does not name a type ifstream fin("sum.in"); ^~~~~~~~ main.cpp:5:1: error: 'ofstream' does not name a type ofstream fout("sum.out"); ^~~~~~~~ main.cpp: In function 'int main()': main.cpp:26:9: error: 'fin' was not declared in this scope fin >> n; ^~~ main.cpp:30:9: error: 'fout' was not declared in this scope fout << t << "\n"; ^~~~ Non zero exit status: 1